ANNULAR METAL CORD AND ENDLESS METAL BELT

WIPO Patent Application WO/2007/055290

A1

An easy-to-produce annular metal cord exhibiting excellent break strength and an endless metal belt are provided. The annular metal cord has an annular core portion (3) and an outer layer portion (4). The annular core portion (3) is formed by bonding the opposite ends of a first strand material (1) consisting of six stranded first metal wires (5). The outer layer portion (4) is formed by winding a second strand material (2) consisting of six stranded second metal wires (6) six turns spirally around the annular core portion (3). The second strand material (2) is wound at a predetermined winding angle with respect to the central axis of the annular core portion (3), wherein the start-of-winding portion and the end-of-winding portion are coupled. Since six second strand materials (2) are not wound but the second strand material (2) are wound six turns, only one second strand material is required and the second strand material is coupled at only one position. Consequently, break strength of the annular metal cord can be enhanced while production is facilitated.

JPS5811326	[Title of the Invention] Bead wire
WO/1999/031313	STEEL CORD WITH POLYMER MATERIAL

SASABE HIROSHI (JP)
WAKAHARA HITOSHI (JP)
SANO YUICHI (JP)
OKAMOTO KENICHI (JP)
KATO KOJI (JP)
SAITO MASAKI (JP)

PCT/JP2006/322391

May 18, 2007

November 09, 2006

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SUMITOMO SEI STEEL WIRE CORP (JP)
SUMITOMO ELECTRIC TOCHIGI CO (JP)
SASABE HIROSHI (JP)
WAKAHARA HITOSHI (JP)
SANO YUICHI (JP)
OKAMOTO KENICHI (JP)
KATO KOJI (JP)
SAITO MASAKI (JP)

D07B1/06

JP2005280606A	2005-10-13
JP2005238997A	2005-09-08
JPH09273088A	1997-10-21
JPH01272833A	1989-10-31

See also references of EP 1953293A4

NAITO, Teruo et al. (7-13 Nishi-Shimbashi 1-chom, Minato-ku Tokyo 03, JP)

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